On 24 October 2018 at 06:10, Patrice Chotard patrice.chotard@st.com wrote:
Add get_pins_count ops to obtain the number of pins owns by a pin-controller. On STM32 SoCs bindings, each pin-controller owns several gpio banks. Each GPIO bank can own up to 16 pins.
To obtain the total pins count, walk through each sub-nodes (ie GPIO banks) and sum each GPIO banks pins number. For that in probe() we build a list with each GPIO device reference found. This list will also be used with future get_pin_muxing and get_pin_name ops to speed up and optimize walk through all GPIO banks.
As this code is common to all STM32 SoCs, this code is put under SPL_BUILD compilation flag to avoid to increase SPL code size for STM32F7 which is limited to 32Ko.
Signed-off-by: Patrice Chotard patrice.chotard@st.com
Changes in v4:
- Fix check of uclass_get_device_by_name() return value, in any error case, continue with the next child.
Changes in v3: None Changes in v2: None
drivers/pinctrl/pinctrl_stm32.c | 90 ++++++++++++++++++++++++++++++++++++++--- 1 file changed, 85 insertions(+), 5 deletions(-)
Reviewed-by: Simon Glass sjg@chromium.org